United Nations. Economic Commission for Europe. (1959). Government policies and the cost of building.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations. Economic Commission for Europe. Government Policies and the Cost of Building. Geneva, 1959.
Παραπομπή σε μορφή MLA (8th εκδ.)United Nations. Economic Commission for Europe. Government Policies and the Cost of Building. 1959.
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